An Exploratory Preclinical In Vivo Pilot Study Evaluating the Hair Growth-Promoting Effects of Rosmarinus Officinalis and Ricinus Communis Combination

    January 2026 in “ BioMed Research International ”
    Alex Mathenge, Elizabeth Odongo, Ruth Mauti, Fednard Osee
    Studysummary This study observed that a combination of rosemary and castor oils promoted hair growth in a mouse model, showing similar hair length trends to 2% minoxidil. However, results from this murine model cannot be directly applied to humans.
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    Research cited in this study 12

    1. “I Am Now Being Who I Am And I’m Proud Of It”: Hair-Related Personal And Social Identity And Subjective Wellbeing Of Older Black Women In The UK Journal of Women & Aging · 2025
    2. An Overview of Commonly Used Natural Alternatives for the Treatment of Androgenetic Alopecia, with Special Emphasis on Rosemary Oil Clinical Cosmetic and Investigational Dermatology · 2024
    3. Natural Alternatives From Your Garden For Hair Care: Revisiting The Benefits Of Tropical Herbs Heliyon · 2023
    4. Role and Mechanisms of Phytochemicals in Hair Growth and Health Pharmaceuticals · 2023
    5. Coconut, Castor, and Argan Oil for Hair in Skin of Color Patients: A Systematic Review PubMed · 2022
    6. The Psychological Consequences of Androgenetic Alopecia: A Systematic Review Journal of Cosmetic Dermatology · 2022
    7. Castor Oil: The Culprit of Acute Hair Felting International journal of trichology · 2017
    8. Rosemary Oil vs Minoxidil 2% for the Treatment of Androgenetic Alopecia: A Randomized Comparative Trial PubMed · 2015
    9. Effect of a Nutritional Supplement on Hair Loss in Women Journal of Cosmetic Dermatology · 2015
    10. Promotion of Hair Growth by Rosmarinus Officinalis Leaf Extract Phytotherapy Research · 2012
    11. Dissecting the Impact of Chemotherapy on the Human Hair Follicle ˜The œAmerican journal of pathology · 2007
    12. Promotion of Hair Growth by Ginseng Radix on Cultured Mouse Vibrissal Hair Follicles Phytotherapy Research · 2003